Photochromic lenses have been around since the 1960s, but the difference in today's technology compared to what it used to be is, well, night and day. Once a tad slow in returning to clear after coming indoors from a sunny day, the modern chameleon-like Transitions® Signature® Lenses use Chromea7™ photochromic technology and are more responsive than light-adaptive lenses of the past.
How times and technology have changed! Unlike their predecessors, Transitions® Signature® Lenses are crystal clear indoors and darken the precise amount when you're under bright sun, partial sun, or indirect light that's reflected from surfaces. When you step out of the sun, the lenses fade back posthaste so there's no awkward dark lens moments when you come in from the sun.
Transitions® Signature® Lenses continually block harmful blue light that radiates from those digital devices we all spend so much time with, as well as 100 percent of the pesky UVA and UVB rays from the sun. It's eye protection without having to think about it. No more squinting, searching for sunnies in your bottomless bag, or risking the chance of eye problems like cataracts. They're the easiest way to stay comfortable and keep your eyes safe—they fit any prescription, any frame size, and they're suitable for all ages.